[INFO] fetching crate elba 0.3.0...
[INFO] checking elba-0.3.0 against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] extracting crate elba 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate elba 0.3.0 on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate elba 0.3.0
[INFO] finished tweaking crates.io crate elba 0.3.0
[INFO] tweaked toml for crates.io crate elba 0.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f181a2f550fe368d51143020a5a9889cc9a757662dedad519d228eebbc0574be
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f181a2f550fe368d51143020a5a9889cc9a757662dedad519d228eebbc0574be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f181a2f550fe368d51143020a5a9889cc9a757662dedad519d228eebbc0574be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f181a2f550fe368d51143020a5a9889cc9a757662dedad519d228eebbc0574be", kill_on_drop: false }`
[INFO] [stdout] f181a2f550fe368d51143020a5a9889cc9a757662dedad519d228eebbc0574be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c26ed063c33c1bd208442dfc48045c7934defb99f9b59caeb1c32abc4f899f4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0c26ed063c33c1bd208442dfc48045c7934defb99f9b59caeb1c32abc4f899f4", kill_on_drop: false }`
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[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib/retrieve/cache.rs:370:10
[INFO] [stdout]     |
[INFO] [stdout] 370 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib/util/git.rs:372:14
[INFO] [stdout]     |
[INFO] [stdout] 372 |     cb: &mut FnMut(git2::FetchOptions) -> Res<T>,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(git2::FetchOptions) -> Res<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib/retrieve/cache.rs:370:10
[INFO] [stdout]     |
[INFO] [stdout] 370 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib/util/git.rs:372:14
[INFO] [stdout]     |
[INFO] [stdout] 372 |     cb: &mut FnMut(git2::FetchOptions) -> Res<T>,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(git2::FetchOptions) -> Res<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/lib/retrieve/mod.rs:205:28
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let locked = self.lockfile.find_by(|sum| sum.id.lowkey_eq(pkg));
[INFO] [stdout]     |                      ------------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 205 |                     return self
[INFO] [stdout]     |                            ^^^^ mutable borrow occurs here
[INFO] [stdout] 206 |                         .select(&Summary::new(pkg.clone(), v.clone()))
[INFO] [stdout]     |                                                            - immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/lib/retrieve/mod.rs:205:28
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let locked = self.lockfile.find_by(|sum| sum.id.lowkey_eq(pkg));
[INFO] [stdout]     |                      ------------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 205 |                     return self
[INFO] [stdout]     |                            ^^^^ mutable borrow occurs here
[INFO] [stdout] 206 |                         .select(&Summary::new(pkg.clone(), v.clone()))
[INFO] [stdout]     |                                                            - immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 32s
[INFO] running `Command { std: "docker" "inspect" "0c26ed063c33c1bd208442dfc48045c7934defb99f9b59caeb1c32abc4f899f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c26ed063c33c1bd208442dfc48045c7934defb99f9b59caeb1c32abc4f899f4", kill_on_drop: false }`
[INFO] [stdout] 0c26ed063c33c1bd208442dfc48045c7934defb99f9b59caeb1c32abc4f899f4